Knife



FIG. 1 is a side elevational view of a knife, showing our new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side view thereof; and

FIG. 6 is a side view thereof.

The ornamental design for a knife, as shown and described.